12.Many young people use computers,but few of them know how to look after them.Remember the following when you use your computer.
◆Keep your computer in a cool room.Too much or too little heat is bad for computers.Most computers work best at a temperature of 5°C-30°C.
◆Don't let people smoke cigarette(香煙)near your computer.Smoke of all kinds is very bad for many parts of a computer and can cause many problems.
◆Don't eat or drink when you are near your computer.Pieces of food and a little water in the keyboard can also cause many problems.
◆Make sure the screen is the correct distance from your eyes.If you wear glasses,make sure these glasses are correct for using with the computer.Some people use a different pair of glasses when they use a computer.
◆Keep your screen clean and don't have it too bright.A dirty screen can hurt your eyes.A very bright screen can also be bad for your eyes.

41.According to the passage you should use your computerC.
A.in a small room           B.in a big room
C.in a cool room            D.below 5°C
42.When you work on the computer,you canA.
A.wear glasses                  B.smoke cigarette
C.eat some hamburgers           D.clean the keyboard with water
43.If you want to look after your eyes,you shouldB when you use computers.
A.buy a pair of sunglasses        B.keep your screen clean
C.have your screen very bright    D.keep your screen near your eyes.

分析 短文大意:
   許多年輕人使用電腦,但是他們很少有人知道如何保護(hù)電腦.當(dāng)你使用電腦的時(shí)候,記住下面這些事情.
   把電腦放在涼爽的房間里.溫度過(guò)高或過(guò)低對(duì)電腦都有害.大多數(shù)電腦工作的最適宜的溫度在5度和30度之間.
   不要讓人在你電腦附近吸煙.各種各樣的煙霧對(duì)計(jì)算機(jī)的許多部件都是很不利的,而且會(huì)引起很多問(wèn)題.
   當(dāng)你在電腦附近時(shí)不要吃喝東西.鍵盤上的食物和少量的水也會(huì)引起很多問(wèn)題.
   注意屏幕離你眼睛的正確距離.你戴的眼鏡,要確保這些眼鏡在正確使用電腦時(shí)對(duì)電腦是適合的.有些人在使用電腦時(shí)使用不同的眼鏡.
   保持屏幕清潔,不要讓屏幕太亮.屏幕臟的話會(huì)損害你的眼睛.非常亮的屏幕對(duì)你的眼睛也有壞處.

解答 41.C:細(xì)節(jié)理解題.根據(jù)Keep your computer in a cool room.可知你應(yīng)該在一個(gè)涼爽的房間里用電腦.故選C.
42.A:細(xì)節(jié)理解題.根據(jù)Don't let people smoke cigarette(香煙)near your computer.Smoke of all kinds is very bad for many parts of a computer and can cause many problems.Don't eat or drink when you are near your computer.Pieces of food and a little water in the keyboard can also cause many problems.可知當(dāng)你用電腦工作時(shí),你可以戴眼鏡.但是smoke cigarette;eat some hamburgers;clean the keyboard with water是不可以做的事,故選A.
43.B:細(xì)節(jié)理解題..據(jù)最后一段Keep your screen clean and don't have it too bright.A dirty screen can hurt your eyes.可知如果你想關(guān)照你的眼睛,當(dāng)你用電腦的時(shí)候你應(yīng)該保持屏幕清潔,屏幕臟會(huì)傷害你的眼睛.故選B.

點(diǎn)評(píng) 本篇短文是有關(guān)科普知識(shí)類閱讀.短文給我們介紹了用電腦時(shí)的幾個(gè)注意事項(xiàng).所給題目主要是考查我們對(duì)短文的細(xì)節(jié)理解.我們只有對(duì)短文意思清楚了,這些對(duì)短文的細(xì)節(jié)理解題就迎刃而解了.

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